C
|
Si
|
Mn
|
Cr
|
Mo
|
P
|
S
|
0.28-0.4
|
0.2-0.8
|
0.6-1.0
|
1.4-2.0
|
0.3-0.55
|
≤0.030
|
≤0.030
|
C
|
Si
|
Mn
|
Cr
|
Mo
|
Ni
|
0.33
|
0.3
|
0.9
|
1.85
|
0.5
|
0.9
|
C
|
Si
|
Mn
|
Cr
|
Mo
|
Ni
|
0.33
|
0.45
|
0.8
|
1.8
|
0.5
|
0.45
|